Brake for railway-cars.



No. 698,310. Patented Apr. 22, I902.

W. N. MclNNlS. BRAKE FOR RAILWAY CABS.

' (Applicatiozi filed Feb. 21, 1901.)

(No Model.

Ullll witm UNITED STATES PATENT OFFICE.-

WILLIAM N. MOINNIS, F BELVIDERE, NEWJERSEYQASSIGNOR OF TWO- THIBDS TOJOSEPHII. WILSON, HENRY s. HARRIS, CHARLES E. HARRIS, AND ROBERTA R.HARRIS, or BELVIDERE, NEW JERSEY.

- BRAKE FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent" No. 698,310, dated April22, 1902.

Application filec'l I'ehruary21,1901. Serial it). 48300. (No model.)

To all whom, it mag/0071106771 Be it known that I, WILLIAM N. Mo'INNIs,a citizen of the United States," and a resident of Belvidere, in thecounty of Warren and State 5 of New Jersey, have made a certain new anduseful Invention in Brakesfor Railway-Oars; and I declare the followingto be a full, clear, and exact description of, the same, such as willenable others skilled in the art to which it apio pertains to make anduse'the invention, refl erence being had to the'accompanyin-g draw ings,and to letters of reference marked thereon, which'forrn a part of thisspecification.

Figure 1 is a side elevation of my'inve ntion r 5 as applied. Fig. 2 isa cross-section on the line 2 2, Fig. 1. Y

The inventionjhas relationfto track-brakes for railway-oars; and itconsists in the novel construction and combination of parts,as hereinafter set forth.

In the accompanying drawings the letters A A represent the frameworkoftrucks of a car, parts of which only are shown.

B B indicate strong metal plates or lugs of z" 5 said trucks, to whichare pivoted the upper toggle-bars 0, these being pivoted to the lowertoggle-bars C and to the transverse rod e, to which the piston-rod F isconnected.

D represents the brake-shoe, which is piv- 3o oted to a transverse shoerod or bar I), which is about as long as the track is wide and carries abrake-shoe at each end. This bar bis connected to the lower end of thetoggle-bar O and to the lower end-of a pivoted strut or brace-bar E,which is pivoted to the truckframe at d.

The brace-bar E and-the lower toggle-bar C are oppositely inclined,diverging upwardly from their connection to the transverse bar I). Inthis manner; is formed a compound 40 three-arm toggle, having thebrake-shoe bar inthe lower angle and the piston-bar in the upper angle.This forms a combined length wise and vertical toggle device. In thisconstruction the pivoted strut or bracernay be connected to the lowerpartjof the truck.

7 When the brake is to be applied, the power cylinder is operated in theusual manner to force the piston-rods toward the trucks, so that theiraction tends to straighten the vertical branches of the toggle'that isto say, to render its angle less acute'-while atthe same timethelongitudinal toggle-bars are causedto approacheach other at a moreacute angle in suc'h'wise that great pressure is exerted on 5 5 thebrake-shoes and through said shoes on the rails. Reverse movement of thepistonrods relieves the pressure and lifts the brake shoes. j a

Having described this. ,in'vention' what I claim, and desire to secureby Letters Patent,

In a track-brake for railway-cars, the shoes, the brace bars'or linkshaving a pivotal connection with said shoes,and with the truckframe, thetoggledevers having aYpivotal connection with said shoes, and with thetruckframe, and means foroperating said toggles, substantially asspecified.

In testimony whereofl afifix my signature 7o JOHN L. BUOK5. WM.KpJonnson.

